This special issue of the Urban Agriculture Magazine discusses major issues and provides information on enhancing the contribution of urban agriculture to food security in a number of cities in the world: Harare (Zimbabwe), Dakar and Niayes (Senegal), Mexico City, Dar Es Salaam (Tanzania), Hubli-Dharwad and Calcutta (India), Manila, Marilao and Cagayan de Oro (Philippines), Nairobi and Nakuru (Kenya), Accra and Kumasi (Ghana), Havana (Cuba) and Lima (Peru) . It calls for careful attention to it in the strategies towards sustainable urban development.